<!DOCTYPE html>
<head>
<meta charset="UTF-8">
  <!-- 引入样式 -->
  <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-default/index.css">
  <!-- 先引入 Vue -->
  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <!-- 引入组件库 -->
  <script src="https://unpkg.com/element-ui/lib/index.js"></script>
<style>
.el-carousel__item h3 {
    color: #475669;
    font-size: 18px;
    opacity: 0.75;
    line-height: 127px;
    margin: 0;
  }
  
  .el-carousel__item:nth-child(2n) {
    background-color: #99a9bf;
  }
  
  .el-carousel__item:nth-child(2n+1) {
    background-color: #d3dce6;
  }
</style>
</head>
<body>
<div id="app">
<el-carousel :interval="5000" arrow="always">
    <el-carousel-item v-for="item in 4" :key="item">
     		 <h3>{{ item }}</h3>
    </el-carousel-item>
  </el-carousel>
</div>
</body>
<script>
new Vue({
  el: '#app'
})	
</script>
</html>
